#include<bits/stdc++.h>
using namespace std;

double jisuan_result(int x,char op,int y)
{
	switch(op)
	{
	
	case '+':return x+y;
	case '-':return x-y;
	case '*':return x*y;
	case '/':return (double)x/y;
    }
}

int main()
{
	int a,b=0;
	char op;
	cin>>a>>op>>b;
	double ans = jisuan_result(a,op,b);
	if(ans <= 9 && ans>=0 && ans == (int)ans)     
	{
		cout<<(int)ans;
	}
	else
	{
		cout<<"no answer";
	}
	return 0;
}
